GRAVES "A"

Oil // district 8 // lease#25366

op: WINDOW OPERATING CO., THE

cum_oil

24k BBL

cum_gas

0 MCF

wells

3

production

1993-01 — 2026-03

peak_month

1996-11

-- production_history

cum_oil: 24,465 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

240 BBL/mo

Di (annual)

75.0%

b-factor

0.7

EUR

9,684 BBL

R-squared

0.497

type

hyperbolic

-- wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
3WESTERN SKY OIL & GAS13,0001990-02-27
2WESTERN SKY OIL & GAS13,0001989-10-12
1WESTERN SKY OIL & GAS14,5001989-01-25
EOF // data source: Texas Railroad Commission // 2026